从字符串中提取子字符串，单词在MySQL中用斜杠分隔？
为此，您可以使用SUBSTRING_INDEX()。让我们首先创建一个-
mysql> create table DemoTable1416 -> ( -> StudentCode varchar(100) -> );
使用insert在表中插入一些记录-
mysql> insert into DemoTable1416 values('101/John/Smith');
mysql> insert into DemoTable1416 values('901/Carol/Taylor');
mysql> insert into DemoTable1416 values('400/David/Miller');使用选择显示表中的所有记录-
mysql> select * from DemoTable1416;
这将产生以下输出-
+------------------+ | StudentCode | +------------------+ | 101/John/Smith | | 901/Carol/Taylor | | 400/David/Miller | +------------------+ 3 rows in set (0.00 sec)
以下是从带有斜杠分隔的单词的字符串中提取子字符串的查询-
mysql> select substring_index(StudentCode,'/',-2) from DemoTable1416;
这将产生以下输出-
+-------------------------------------+ | substring_index(StudentCode,'/',-2) | +-------------------------------------+ | John/Smith | | Carol/Taylor | | David/Miller | +-------------------------------------+ 3 rows in set (0.00 sec)